How to integrate Unisender MCP with Hermes

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Introduction

Hermes is a 24/7 autonomous agent that lives on your computer or server — it remembers what it learns and evolves as your usage grows.

This guide explains the easiest and most robust way to connect your Unisender account to Hermes. You can do this through either Composio Connect CLI or Composio Connect MCP. For personal use we recommend the CLI, but you won't go wrong with MCP either.

Also integrate Unisender with

What is Composio Connect?

Composio Connect is a consumer offering that lets anyone plug 1,000+ applications directly into their agent harness — including Hermes. It can:

  • Search and load tools from relevant toolkits on-demand, reducing context usage.
  • Chain multiple tools to accomplish complex workflows via a remote workbench, without excessive back-and-forth with the LLM.
  • Manage app authentication end-to-end with zero manual overhead.

Integrating Unisender with Hermes

Using Composio Connect CLI

1. Install the Composio CLI

Run the install script directly, or paste https://composio.dev/hermes into your Hermes chat box to have it installed for you.

bash
curl -fsSL https://composio.dev/install | bash
Hermes authenticating with Composio

2. Authenticate

Once the CLI is installed, ask Hermes to authenticate with Composio.

3. Connect to Unisender

Ask your agent to connect to Unisender, or simply request any Unisender-related task. Hermes will prompt you to authenticate and authorize access.

4. Done. You're all set with a new Unisender connection.

Using Composio Connect MCP

1. Get your MCP URL and API Key

Go to dashboard.composio.dev and copy your Connect MCP URL and API key.

Copy MCP URL and API key from Composio dashboard

2. Open the Hermes config file

bash
nano ~/.hermes/config.yaml

3. Add the Composio Connect MCP server

bash
mcp_servers:
  composio:
    url: "https://connect.composio.dev/mcp"
    headers:
      x-consumer-api-key: "YOUR_COMPOSIO_API_KEY"
    connect_timeout: 60
    timeout: 180

Save with Ctrl + O, Enter, then exit with Ctrl + X.

4. Restart your Hermes agent

Once restarted, ask your agent to connect to Unisender or request any Unisender-related task. It will prompt you to authenticate and authorize access.

5. Done!

What is the Unisender MCP server, and what's possible with it?

The Unisender MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Unisender account. It provides structured and secure access so your agent can perform Unisender operations on your behalf.

Supported Tools & Triggers

Tools
Check Email StatusTool to check the delivery status of emails sent via sendEmail method.
Create Email TemplateTool to create a new email template for mass campaigns in UniSender.
Create FieldTool to create a new custom field for contact data in UniSender.
Create ListTool to create a new contact list for organizing thematic email campaigns in UniSender.
Create Subscriber NoteTool to create a note for a subscriber contact in UniSender.
Delete FieldTool to remove a custom field from the Unisender system.
Delete ListTool to permanently delete a contact list from your UniSender account.
Delete Subscriber NoteTool to delete a subscriber note from UniSender by its ID.
Delete TagTool to delete a tag by its ID and remove it from all associated contacts.
Delete TemplateTool to remove a template from the UniSender account.
Exclude Contact from ListsTool to remove contacts from specified lists or all lists in UniSender.
Export ContactsTool to export contact data from UniSender lists for synchronization.
Get CampaignsTool to retrieve list of campaigns from Unisender within a specified date range.
Get Campaign StatusTool to check the current status of a campaign in UniSender.
Get ContactTool to get information about a single contact from UniSender.
Get Contact Field ValuesTool to retrieve custom field values for a specific contact identified by email address.
Get FieldsTool to retrieve all custom user-defined fields for contact personalization and data management.
Get ListsTool to retrieve all existing mailing lists associated with the account.
Get MessagesTool to retrieve list of all messages with body and attachments.
Get Sender Domain ListTool to retrieve information about sender domains and their DKIM status.
Get TagsTool to retrieve all custom tags/labels for contact segmentation.
Get TemplateTool to retrieve detailed information about a specific email template by its ID.
Get TemplatesTool to retrieve list of all templates with full content including body.
Import Contacts (Bulk)Tool to bulk import contacts to UniSender with maximum 500 contacts per call.
Check if Contact is in ListsTool to check if a contact exists in specified mailing lists based on and/or conditions.
List MessagesTool to list all messages without body and attachments.
List TemplatesTool to list email templates without body content.
Subscribe Contact to ListsTool to add contacts to one or multiple mailing lists with optional tags and field values.
Unsubscribe ContactTool to unsubscribe contacts from mailing lists in UniSender.
Update Email TemplateTool to update an existing email template for mass campaigns.
Update FieldTool to modify parameters of an existing custom field in UniSender.
Update ListTool to update the parameters of an existing contact list in UniSender.
Update Subscriber NoteTool to update the content of an existing subscriber note in UniSender.

Way Forward

With Unisender connected, Hermes can now act on your behalf whenever it detects a relevant task or you ask it to.

From here, you can extend Hermes further:

  • Connect more apps: Calendar, Slack, Notion, Linear, and hundreds of others are available through the same Composio Connect setup. Each new integration compounds what Hermes can do for you.
  • Build workflows across tools: Once multiple apps are connected, Hermes can chain actions together — turn an email into a calendar invite, a Slack message into a Linear ticket, or a meeting note into a follow-up draft.
  • Let it learn your patterns: The more you use Hermes, the better it gets at anticipating how you'd handle recurring tasks. Give it feedback on drafts and decisions, and it will adapt.

If you run into trouble or want to share what you've built, join the community or check out the Docs for deeper configuration options.

How to build Unisender MCP Agent with another framework

OpenAI Agents SDK logo

OpenAI Agents SDK

Use Unisender MCP with OpenAI Agents SDK

Claude Agent SDK logo

Claude Agent SDK

Use Unisender MCP with Claude Agent SDK

Claude Code logo

Claude Code

Use Unisender MCP with Claude Code

Codex logo

Codex

Use Unisender MCP with Codex

OpenClaw logo

OpenClaw

Use Unisender MCP with OpenClaw

CLI logo

CLI

Use Unisender MCP with CLI

Google ADK logo

Google ADK

Use Unisender MCP with Google ADK

LangChain logo

LangChain

Use Unisender MCP with LangChain

Vercel AI SDK logo

Vercel AI SDK

Use Unisender MCP with Vercel AI SDK

Mastra AI logo

Mastra AI

Use Unisender MCP with Mastra AI

LlamaIndex logo

LlamaIndex

Use Unisender MCP with LlamaIndex

CrewAI logo

CrewAI

Use Unisender MCP with CrewAI

FAQ

What are the differences in Tool Router MCP and Unisender MCP?

With a standalone Unisender MCP server, the agents and LLMs can only access a fixed set of Unisender tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from Unisender and many other apps based on the task at hand, all through a single MCP endpoint.

Can I use Tool Router MCP with Hermes?

Yes, you can. Hermes fully supports MCP integration. You get structured tool calling, message history handling, and model orchestration while Tool Router takes care of discovering and serving the right Unisender tools.

Can I manage the permissions and scopes for Unisender while using Tool Router?

Yes, absolutely. You can configure which Unisender scopes and actions are allowed when connecting your account to Composio. You can also bring your own OAuth credentials or API configuration so you keep full control over what the agent can do.

How safe is my data with Composio Tool Router?

All sensitive data such as tokens, keys, and configuration is fully encrypted at rest and in transit. Composio is SOC 2 Type 2 compliant and follows strict security practices so your Unisender data and credentials are handled as safely as possible.

Used by agents from

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